hi guys
sorry I don't know where to post this
I search everywhere for about 8 month to how to remove supervisor password and got nothing out of it.
lenovo said I have to replace motherboard and .....

I set supervisor password ( I think 3 charechter or 3word3number3word like XXX540XXX ) and hard disk password (3 character ) and i forgot SU password I used hiren boot cd 15.2 but nothing works
I set HDD AND SU two separate password i know the HDD pass cause I had to enter it every time to use laptop but I forgot su password sadly this was the second time i forgot the su password last time i set it like (hmd) and after update it to 2.27 i change t something i don't remember

PLEASE HELP ME REMOVE THE SU PASSWORK.
thanks in advanced

I have
LENOVO THINKPAD E540 laptop
system model 20C600ABUE
with BOIS Version J9ETA2WW (2.88) 2018-06-20 - i update it myself*
SMBIOS VERSION 2.7

(02-17-2019, 11:02 AM)DeathBringer Wrote: Current dump of BIOS will not help.
You need to read Security EEPROM (USROM1) by hardware programmer. E.g. CH341A and SOIC8-clip.
BTW: How much new motherboard is cost?

I don't know exactly how much it cost - i just ask question on community forum.
where can i get one of E.g. CH341A and SOIC8-clip? and how much i cost me?
if I buy and read the Security EEPROM with what ever programmer WILL I COULD wipe SU PASSWORD without and damage?
IS THERE a guarantee?
and how can i find EEPROM on my motherboard? i mean how can i locate them?

It's the smaller chip next to the 2 bios chips. It says something like "L01 8" (do not remember) Pretty much exactly under the buttom cover for the HDD.
So would have to disassembly the whole device to get next to the chip (if I remember right).